Tioughnioga River at Cortland, Cortland County NY (CRTN6)
Gage Location: Cortland County, New YorkSite Location: Cortland County, New York
Latitude: 42.324Longitude: -75.772Elevation: 1084.92 ft. MSLDrainage Area: 292 Sq. Mi.
Minor Stage: 8 ft. Moderate Stage: 10 ft.Major Stage: 12.5 ft.
First Flood: 1939-02-21Last Flood: 2014-03-30 Crest: 8.53 ft.Datum change: 1963-10-01Number of Floods: 112

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Date of FloodCrest(ft)Streamflow(cfs)CategoryCode
1939-02-2110.454290ModerateC1 G1
1940-04-0110.975210ModerateC1 G1
1940-04-0511.586120ModerateC1 G1
1940-04-0913.339660MajorC1 G1 G3
1941-04-0612.497880ModerateC1 G1
1942-03-0910.885330ModerateC1 G1
1942-03-1711.325950ModerateC1 G1
1942-12-3113.569920MajorC1 G1
1943-03-1712.738410MajorC1 G1
1944-03-1711.225960ModerateC1 G1
1945-03-1712.287100ModerateC1 G1
1945-03-229.016660MinorC1 G1
1946-03-0810.624760ModerateC1 G1
1947-03-2510.975200ModerateC1 G1
1947-04-0712.166900ModerateC1 G1
1947-06-0311.115380ModerateC1 G1
1948-03-1710.674820ModerateC1 G1
1948-03-2012.737910MajorC1 G1
1948-03-2212.47300ModerateC1 G1
1949-01-069.083070MinorC1 G1
1950-03-2911.796320ModerateC1 G1
1950-04-0513.8210000MajorC1 G1
1950-12-04-99994400MissingC1 G1
1951-03-3111.976600ModerateC1 G1
1952-03-129.333320MinorC1 G1
1953-02-229.43390MinorC1 G1
1954-02-189.433420MinorC1 G1
1955-03-0210.934940ModerateC1 G1
1955-03-1212.777670MajorC1 G1
1956-03-0811.165420ModerateC1 G1
1956-04-0513.5410000MajorC1 G1
1957-01-2311.035240ModerateC1 G1
1958-04-0711.666170ModerateC1 G1
1959-01-2211.716250ModerateC1 G1
1959-04-0312.197050ModerateC1 G1
1960-02-1111.375720ModerateC1 G1
1960-03-3113.529980MajorC1 F2
1961-02-26138770MajorC1 G1
1962-04-019.663789MinorC1 G1
1963-03-2710.345640ModerateC1 G1
1964-03-0512.4913000ModerateG3
1968-03-248.624900Minornone
1969-04-068.424660Minornone
1970-04-038.614940Minornone
1970-04-108.955340Minornone
1971-04-149.335820Minornone
1972-04-148.194480Minornone
1972-04-188.264560Minornone
1972-06-2310.477730Moderatenone
1972-12-078.695030Minornone
1974-04-0511.119100Moderatenone
1975-02-259.946750Minornone
1975-09-268.885260Minornone
1976-02-198.584910Minornone
1976-04-169.35660Minornone
1976-10-109.165440Minornone
1977-03-1412.1211800Moderatenone
1977-03-308.584590Minornone
1977-09-219.536030Minornone
1977-10-189.666250Minornone
1978-04-029.145410Minornone
1978-04-058.935100Minornone
1979-01-028.764860Minornone
1979-03-0612.4212800Moderatenone
1980-03-2210.457730Moderatenone
1981-02-219.455920Minornone
1981-10-2812.511200Majornone
1983-04-258.224170Minornone
1983-12-1410.497810Moderatenone
1984-02-1511.058530Moderatenone
1984-04-069.45830Minornone
1986-03-1511.018900Moderatenone
1988-03-269.285640Minornone
1990-02-178.34270Minornone
1993-04-019.866400Minornone
1993-04-1112.2510400Moderatenone
1993-04-178.95050Minornone
1994-04-149.615910Minornone
1994-04-17106490Moderatenone
1996-01-2013.0211800Majornone
1996-11-0910.126670Moderatenone
1996-12-0210.457190Moderatenone
1998-01-0810.326990Moderatenone
1999-01-249.786160Minornone
2000-02-2810.968030Moderatenone
2000-05-1410.146700Moderatenone
2001-04-0910.587400Moderatenone
2001-06-248.914930Minornone
2003-03-219.335510Minornone
2003-12-128.474350Minornone
2004-03-069.195310Minornone
2004-03-288.614530Minornone
2005-01-158.494370Minornone
2005-04-0314.0714200Majornone
2006-06-2810.957620Moderatenone
2006-11-178.317620Minornone
2007-03-159.855930Minornone
2007-03-279.545810Minornone
2008-02-078.544210Minornone
2008-03-098.193840Minornone
2008-12-298.073720minornone
2009-03-108.954710Minornone
2010-01-269.014780Minornone
2010-10-0111.318230moderatenone
2011-03-1110.957620Moderatenone
2011-03-198.233380Minornone
2011-04-068.033680Minornone
2011-04-178.484150Minornone
2011-09-089.885970Minornone
2013-02-018.364020Minornone
2013-07-029.835900Minornone
2014-03-308.534200Minornone



Codes and description

C1|Crest information looks unreliable and incomplete and not used in frequency calculations. Some of the floods are based on current flood stage and nearby gage information.
C2|Crest information looks reliable despite potential problems. This data was used in frequency calculations.
C3|Crest height estimated by the USGS.
C4|Crest height is from the National Weather Service.
C5|Crest height affected by backwater.
C6|Crest occurred at a previous flood stage that is lower than the current flood stage. The crests below the new flood stage are not used in flood frequency calculations.
C7|Crest from USGS yearly peak and/or date is different than the crest we provide. In many cases MARFC uses crest based on backwater or ice effects.
C8|Crest month or day of occurrence has been estimated by The Middle Atlantic River Forecast Center usually based on nearby gage information.
C9|Crest date (day) in the month is unknown.
F1|Flow is an estimate.
F2|Flow affected by regulation or diversion and in some cases to an unknown degree.
F3|Flow effected by snow-melt, ice jam or debris jam break up.
F4|Flow affected by dam failure.
F5|Flow - All or part of the record affected by urbanization, mining, agricultural changes, channelization or other factors.
G1|Gage height at a different site and/or datum.
G2|Gage is not an official USGS gage with crests provided by the NWS. Crest information looks unreliable and incomplete and not used in flood frequency calculations.
G3|Gage datum changed during this year.
none,No code; Good Data

Updated: 08:03 AM Mar 31, 2014